The provider isn't compatible with the version of Oracle client

Keep all files in the installation folder. Then put my very small application (need to access the remote Oracle database) in this folder. Delete the files that feel useless directly, extract the files that may be unnecessary, leave them in a separate folder, and run the program. If the program can run, then continue to extract may not need files, if not run, then you can be sure that this file is required by the program, step by step such repeated processing. The following streamlined Oracle clients have been


In this folder, you find the DLL components that the. NET application must have:

Oci.dll
OraOps11w.dll
Oraociei11.dll
Oracle. DataAcess.dll

Download these four DLLs

Replace these four DLLs

1. Replace the above four DLLs with an Oracle installation package

2. If a thread is already in use and cannot be replaced

(1) Right click on the computer, then click Manage, appear as follows:

(2) Shut down services in Oracle that will start

(3) Copy the above mentioned four DLLs into the said directory

(4) Restart your computer

(5). NET Using Oracle database OK

The provider isn't compatible with the version of Oracle client